Re: completion for aliased commands does not work

Re: completion for aliased commands does not work

[Daniel Shahaf]

Fourhundred Thecat wrote on Mon, Oct 31, 2016 at 23:47:21 +0100:
>   alias diff='colordiff'
>   diff --<TAB>
>   /usr/bin/diff --<TAB>

Completion "sees through" aliases.  You'll find that with the above
alias, «diff <TAB>» and «colordiff <TAB>» behave the same way.
Therefore, define a completion for colordiff:

    compdef colordiff=diff

Re: completion for aliased commands does not work

[Bart Schaefer]

On Oct 31, 11:12pm, Daniel Shahaf wrote:
} Subject: Re: completion for aliased commands does not work
}
} Fourhundred Thecat wrote on Mon, Oct 31, 2016 at 23:47:21 +0100:
} >   alias diff='colordiff'
} >   diff --<TAB>
} >   /usr/bin/diff --<TAB>
} 
} Completion "sees through" aliases.  You'll find that with the above
} alias, "diff <TAB>" and "colordiff <TAB>" behave the same way.

That's actually not true.  You have to "setopt complete_aliases" for
completion to "see through".  If for some reason you do not want to
set that, THEN:

} Therefore, define a completion for colordiff:
} 
}     compdef colordiff=diff

Re: completion for aliased commands does not work

[Mikael Magnusson]

On Tue, Nov 1, 2016 at 12:33 AM, Bart Schaefer
<schaefer@brasslantern.com> wrote:
> On Oct 31, 11:12pm, Daniel Shahaf wrote:
> } Subject: Re: completion for aliased commands does not work
> }
> } Fourhundred Thecat wrote on Mon, Oct 31, 2016 at 23:47:21 +0100:
> } >   alias diff='colordiff'
> } >   diff --<TAB>
> } >   /usr/bin/diff --<TAB>
> }
> } Completion "sees through" aliases.  You'll find that with the above
> } alias, "diff <TAB>" and "colordiff <TAB>" behave the same way.
>
> That's actually not true.  You have to "setopt complete_aliases" for
> completion to "see through".  If for some reason you do not want to
> set that, THEN:
>
> } Therefore, define a completion for colordiff:
> }
> }     compdef colordiff=diff
>

That's actually not true, setting complete_aliases makes completion
treat aliases as separate commands. :)

-- 
Mikael Magnusson

Re: completion for aliased commands does not work

[Bart Schaefer]

On Nov 1,  6:29am, Mikael Magnusson wrote:
}
} That's actually not true, setting complete_aliases makes completion
} treat aliases as separate commands. :)

Er, I think I we're interpreting "see through" differently.  Obviously
given

    alias diff='colordiff'

then either

    setopt complete_aliases
or
    compdef colordiff=diff

will cause options for "diff" to be completed, instead of looking for
a completion for "colordiff".  On reflection I don't know why I took
Daniel's statement --

> } You'll find ... "diff <TAB>" and "colordiff <TAB>" behave the same

-- to mean that both should *work*.  The other interpretation of "see
through" makes more sense.

completion for aliased commands does not work

[Fourhundred Thecat]

Hello,

I have couple of aliases defined in my .zshrc, ie:

  alias diff='colordiff'

I have noticed, completion does not work properly for these aliased commands

  diff --<TAB>

does not complete any options. Whereas, when I use the unaliased real
diff, completion works perfectly

  /usr/bin/diff --<TAB>

Is there any way to fix this?

Cheers,